feat(sshclient): add a promise-first SSH client with secure host verification and improve SSH key/config handling

ts/smartssh.classes.sshdir.ts

@@ -1,6 +1,5 @@
 import * as plugins from './smartssh.plugins.js';
 import * as helpers from './smartssh.classes.helpers.js';
-import { SshInstance } from './smartssh.classes.sshinstance.js';
 import { SshKey } from './smartssh.classes.sshkey.js';
 import { SshConfig } from './smartssh.classes.sshconfig.js';
 
@@ -13,32 +12,31 @@ export class SshDir {
     this._sshKeyArray = sshKeyArray;
     this._sshConfig = sshConfig;
     if (sshDirPathArg) {
-      this._path = sshDirPathArg;
+      this._path = helpers.resolveSshDirPath(sshDirPathArg);
     } else {
-      this._path = plugins.path.join(plugins.smartpath.get.home(), '.ssh/');
+      this._path = helpers.resolveSshDirPath();
     }
   }
 
   writeToDir(dirPathArg?: string) {
     // syncs sshInstance to directory
     let path = this._path;
-    if (dirPathArg) path = dirPathArg;
+    if (dirPathArg) path = helpers.resolveSshDirPath(dirPathArg);
     this._sshKeyArray.forEach((sshKeyArg) => {
-      sshKeyArg.store(path);
+      sshKeyArg.storeSync(path);
     });
     this._sshConfig.store(path);
   }
 
-  /**
-   * TODO: implement reading of directories
-   */
   readFromDir(dirPathArg?: string) {
     // syncs sshInstance from directory
     let path = this._path;
-    if (dirPathArg) path = dirPathArg;
+    if (dirPathArg) path = helpers.resolveSshDirPath(dirPathArg);
+    const sshKeys = helpers.sshKeyArrayFromDir(path);
+    this._sshKeyArray.splice(0, this._sshKeyArray.length, ...sshKeys);
   }
   updateDirPath(dirPathArg: string) {
-    this._path = dirPathArg;
+    this._path = helpers.resolveSshDirPath(dirPathArg);
   }
 
   getKeys() {